Assignment4-Group3
Group3
03/06/2020
1 Ketan Kabu:
1.1 Correlation of version development and rating
1.1.1 What is version code?
Version code is a positive integer used as an internal version number. This number is used only to determine whether one version is more recent than another, with higher numbers indicating more recent versions. The value is a positive integer so that other apps can programmatically evaluate it, for example to check an upgrade or downgrade relationship.@mcmurtry_zampano_2020
1.1.2 Average number of app developments of top 30 apps
Top 30 apps are chosen on the basis of usage, which in this case is assumed to be total rating counts.
| App | Average Major Developments |
|---|---|
| 95 | |
| Google – Search made just for mobile | 27 |
| 10 | |
| Clash of Clans | 9 |
| Pandora - Music & Radio | 8 |
| Spotify Music | 8 |
| The Weather Channel: Forecast, Radar & Alerts | 8 |
| Angry Birds | 7 |
| Bible | 7 |
| Calorie Counter & Diet Tracker by MyFitnessPal | 7 |
| Google Earth | 7 |
| PAC-MAN | 6 |
| 6 | |
| Head Soccer | 5 |
| The Simsâ„¢ FreePlay | 5 |
| CSR Racing | 4 |
| Despicable Me: Minion Rush | 4 |
| Solitaire | 4 |
| DragonVale | 3 |
| Sonic Dash | 3 |
| Fruit Ninja Classic | 2 |
| Injustice: Gods Among Us | 2 |
| Candy Crush Saga | 1 |
| Clear Vision (17+) | 1 |
| Crossy Road - Endless Arcade Hopper | 1 |
| Hay Day | 1 |
| Minecraft: Pocket Edition | 1 |
| Plants vs. Zombies | 1 |
| Subway Surfers | 1 |
| Temple Run | 1 |
Table 1.1
Facebook is the app that by far has had the most developments out of the top 30 apps, with 95 major developments. This is followed by Google with 27 and Instagram with 10. Interestin to note that Temple Run and Subway Surfers, 2 apps that are widely popular and been around since a long time have only had 1 major development.
1.2 Average number of app developments of all genres
Let’s take a look at the genres with highest number of major developments
| <<<<<<< HEAD Genre | Average Developments ======= prime_genre | average_rating >>>>>>> refs/remotes/origin/master |
|---|---|---|
| <<<<<<< HEAD Finance | 100 | |
| Sports | 34 | |
| Entertainment | 7 ======= Productivity | 4.005618 >>>>>>> refs/remotes/origin/master |
| <<<<<<< HEAD Navigation | 6 ======= Music | 3.978261 >>>>>>> refs/remotes/origin/master |
| <<<<<<< HEAD Social Networking | 6 ======= Photo & Video | 3.800860 >>>>>>> refs/remotes/origin/master |
| <<<<<<< HEAD Travel | 6 ======= Business | 3.745614 >>>>>>> refs/remotes/origin/master |
| <<<<<<< HEAD News | 5 ======= Health & Fitness | 3.700000 >>>>>>> refs/remotes/origin/master |
| Games | <<<<<<< HEAD 4 ======= 3.685008 >>>>>>> refs/remotes/origin/master | |
| <<<<<<< HEAD Medical | 4 ======= Weather | 3.597222 >>>>>>> refs/remotes/origin/master |
| <<<<<<< HEAD Photo & Video | 4 ======= Shopping | 3.540984 >>>>>>> refs/remotes/origin/master |
| <<<<<<< HEAD Productivity | 4 ======= Reference | 3.453125 >>>>>>> refs/remotes/origin/master |
| <<<<<<< HEAD Shopping | 4 | |
| Book | 3 | |
| Business | 3 ======= Travel | 3.376543 |
Research for gener with rating
As we can see from the table1 and the figure1, there are 23 different types of App in the research. The highest rating is type of productivity, which is 4 mark.On the other hand, the lowest rating is catalogs, which is 2.1 mark. overall, the different type of App’s ratings are fairly close. The gap of highest and lowest is 1.9.and the top and the second within a tenth of a point.
- Which genre support most language?
Table2. Ranking of language with different genre prime_genre average_language Productivity 11.050562 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Food & Drink 3 ======= Business 10.684211 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Health & Fitness 3 ======= Photo & Video 9.664756 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Lifestyle 3 ======= Social Networking 9.125749 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Music 3 ======= Travel 7.592593 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Reference 3 ======= Weather 7.319444 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Utilities 3 ======= Education 7.205298 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Weather 3 ======= Music 7.137681 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Education 2 ======= Health & Fitness 6.661111 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Catalogs 1 Table 1.2
As we can see, Finance and Sports apps seem to have a massive number of developments with 100 and 34 average major developments respectively. Is it that all Finance and Sports apps have such massive number of developments or are there outliers spiking the average?
1.2.1 Finance apps with most number of developments
Table 1.3: Finance app developments ======= Utilities 6.520161 
Research for gener with language
As we can see from table2 and figure2, the genre of productivity is support the most language, which is the type of 11 different languages.And the lowest is the Finance app, only support 2 types of language about that. The gap is huge between the top and the lowest, but every type of Apps Will provide at least two different languages.
- Which genre support most devices?
Table3.Ranking of support devices with different genre >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Apps Average Developments ======= prime_genre average_devices >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Stock Market HD: Real Time Stocks Tracker + Forex 2023 Stock Market Pro: Stock Trading, Charts & Alerts 2023 Citi Mobile® 8 ======= Games 38.01838 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Bank of America - Mobile Banking 7 ======= Book 37.54464 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Bank of America - Mobile Banking for iPad 7 ======= Catalogs 37.30000 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD TaxCaster – Free tax refund calculator 7 ======= Lifestyle 37.06944 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD USAA Mobile 7 ======= Travel 37.01235 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Venmo 7 ======= Sports 36.92105 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD PayPal - Send and request money safely 6 ======= Food & Drink 36.92063 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Amex Mobile 5 ======= Finance 36.83654 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Capital One Mobile 5 ======= Photo & Video 36.75645 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD IRS2Go 5 Mint: Personal Finance, Budget, Bills & Money 5 Pennies – Budget and Expense Tracker 5 VyStar Mobile Banking for iPhone 5 Credit Karma: Free Credit Scores, Reports & Alerts 4 ======= Utilities 36.68548
Research for gener with devices
As we can see from table3 and figure3,the top on support devices is Games.It support 38 different types of devices and the lowest is Music,which support 35 different types of devices.Each type of app is at least 35 different devices.The gap between the top and lowest is very close.
Sen Wang
- Genre-rating-price correlation?
No strong relation between app categories and user ratings in different price
According to the Figure @ref(fig:data_plot1), there is no strong relationship between app categories and user ratings in different price. Each type of App has similar user ratings at different prices. However, we can find that the price of shopping and financial apps is lower than that of other apps, which may be because they hope to gain more users through low threshold, and medical apps are the most expensive, which may be because they provide valuable information about users’ health.
- Genre-rating-size correlation?
The relation between app size and user rating in different genres
According to the Figure @ref(fig:data_plot2), for most kinds of apps, with the increase of application size, the average user evaluation increases with the increase of praise. Developers can gain higher user ratings by increasing the size of their apps.
Yezi He
- Most number of rating counts for which genre? (i.e., number of people who rated)
Most number of rating counts for which genre
<<<<<<< HEADThe rank of rating counts for which genre genre count Games 52878491 Social Networking 7598316 Photo & Video 5008946 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD KeyBank Mobile 4 ======= Entertainment 4030518 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD BillMinder - Bill Reminder and Organizer 3 ======= Music 3980199 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Chase Mobile 3 ======= Shopping 2271070 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD HomeBudget with Sync 3 ======= Health & Fitness 1784371 >>>>>>> refs/remotes/origin/master Table 1.3
Stock Market HD and Stock Market Pro clearly show a much higher number of major developments, 2023 each. The 3rd highest developed app, Citi Mobile, has had only 8 major developments.
1.2.2 Sports apps with most number of developments
Table 1.4: Sports app developments ======= It can be seen from Figure @ref(fig:numcount) and Table @ref(tab:ranknumcount) that the number of people who rated games is far more than the number of people who rated other genres. The top three are games, social networking and photo & video.
- Rise/drop in rating since last update?
Rise/drop in rating since last update
<<<<<<< HEADThe rank of rise/drop in rating since last update >>>>>>> refs/remotes/origin/master <<<<<<< HEAD Apps Average Developments ======= genre difference >>>>>>> refs/remotes/origin/master <<<<<<< HEAD NBA 2013 NFL 14 CBS Sports App - Sports Scores, News, Stats, Watch 10 MLB.com At Bat 10 Onefootball - Soccer Scores & Live News 10 Fantasy Football Manager - FFM for FPL 9 The Masters Tournament 9 Yahoo Fantasy Sports 9 2016 U.S. Open Golf Championship 8 2016 US Open Tennis Championships 8 NHL 8 PGA Championship 2016 – Baltusrol Golf Club 8 The Championships, Wimbledon 2016 - Tennis Grand Slam 8 NCAA March Madness Live - Men’s College Basketball 7 BTN2Go 6 Coach’s Eye - Video Analysis 6 ======= Shopping -0.9221311 Finance -0.7980769 Food & Drink -0.7698413 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD KICK: Official Football Card Trader 6 ======= News -0.7666667 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD NASCAR MOBILE 6 ======= Lifestyle -0.5868056 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD NFL HUDDLE: Football Card Trader 6 ======= Travel -0.5555556 >>>>>>> refs/remotes/origin/master <<<<<<< HEAD SofaScore Live Sports: Scores, VIDEO & Stats 6 ======= Navigation -0.5326087 >>>>>>> refs/remotes/origin/master Table 1.4
Like finance apps in table 1.3, the app NBA spikes the average developments of the sports genre with 2013 major developments, whereas, the second highest app NFL only has 14 major developments.
=======1.2.3 Relationship between major developments and rating
Please hover pointer over the scatter plot points to view the Genre
Figure 1.1: Development-Rating correlation
Figure 1.1
The plot above indicates that finance apps (on the far right) have had way more major developments than any other genre of apps, but not a relatively high rating. Most of the app genres lie in the range of 1-12 developments, while also hovering around the 4 star rating, which is quite decent. But finance and sports, with their huge number of major developments, lie below 4 rating, with sport at 3.6 and finance at 3.8 respectively.
Although, we know from table 1.3 and 1.4 that not all apps in these genres have had that many developments, with only a few spiking the average.
Health And Fitness, Games have the highest average rating among all genres, even though average major developments are only 3 and 4 respectively.
For Finance and Sports, though, if we remove the outliers spiking the average, what would the above plot shape up to be?
Figure 1.2: Development-Rating correlation (updated)
Figure 1.2
By removing only 2 outlier apps (Stock Martket Pro, Stock Markter HD) from Finance and one (NBA) from Sport, the graph becomes much more appropriately scaled. Finance average developments drop from 100 to 4, whereas Sports drops from 34 to 4.
It can be seen from Figure @ref(fig:ratingdifference) and Table @ref(tab:rankratingdifference) that shopping apps have the fastest drop in ratings after last update. Finance and food & drink are followed in the ranking.
Ketan Kabu:
- Development-Rating correlation?
- Which genre support most devices?